13123434 has 32 divisors (see below), whose sum is σ = 27060480. Its totient is φ = 4240832.

The previous prime is 13123423. The next prime is 13123441. The reversal of 13123434 is 43432131.

It is a self number, because there is not a number n which added to its sum of digits gives 13123434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48652 + ... + 48920.

It is an arithmetic number, because the mean of its divisors is an integer number (845640).

Almost surely, 2^13123434 is an apocalyptic number.

13123434 is an abundant number, since it is smaller than the sum of its proper divisors (13937046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13123434 is a wasteful number, since it uses less digits than its factorization.

13123434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494.

The product of its digits is 864, while the sum is 21.

The square root of 13123434 is about 3622.6280515670. The cubic root of 13123434 is about 235.8753171712.

Adding to 13123434 its reverse (43432131), we get a palindrome (56555565).

The spelling of 13123434 in words is "thirteen million, one hundred twenty-three thousand, four hundred thirty-four".